This Instructable is being entered into the 3rd Annual Make it Stick contest and the Halloween Easy Costumes Contest. Don't forget to vote... even if it's not for me. :(
My wife and I decided to dress up for the release of the Avengers movie earlier this year. Considering the fact that I had been growing my hair out and that I had a beard we thought it appropriate for me to go as Thor. I started by making Thor's hammer Mjolnir, which you can see here: How to Make the Hammer of Thor.
After I finished the hammer my wife helped me finish the rest of the costume. Unfortunately I didn't get a whole lot of pictures but I will try to fill the details in by explaining each step really well.